i bought the "o" ring at the dealer. dealer sold wrong one. mechanic said he had one that would work and used it.. i don,t see any oil leaking from that area . my shady tree friendly mechanic is not very excited about redoing the gasket. he wants to wait to see if it seals itself ?? . he does screw up sometime. but it,s always an honest mistake. it hurts,but i can deal with that. and then i called about 6 shops today. no two had the same plan.